Impurity removal type transformer oil conservator

Abstract

The invention discloses an impurity removal type transformer oil conservator, and relates to the technical field of transformer oil conservators, the impurity removal type transformer oil conservator comprises a base, the base is fixedly connected with an oil storage device, one side of the oil storage device is communicated with a return pipe, the return pipe is fixedly connected with the base, the base is fixedly connected with a liquid outlet pipe, and the liquid outlet pipe is communicated with the oil storage device. The backflow pipe and the liquid outlet pipe are both communicated with the transformer body, the liquid outlet pipe is communicated with a filter pipe, the other side of the oil storage device is communicated with a liquid inlet pipe, the filter pipe is communicated with the liquid inlet pipe, a first sliding frame is arranged in the filter pipe, and a first filter screen is fixedly connected to the top of the first sliding frame. The first filter screen is located in the filter pipe, and the first sliding frame is in sliding connection with a sliding plug. Impurities doped in transformer oil are intercepted in the cavity, located above the sliding plug, of the filter pipe through the first filter screen, the impurities in the transformer oil are effectively intercepted and stored, the impurity removal effect is achieved, and the impurities are prevented from flowing back into the transformer body.

Description

Technical Field

[0001] The invention relates to the technical field of transformer oil conservators, in particular to a transformer oil conservator with impurities removed. Background Art

[0002] During the operation of the transformer, as the load and ambient temperature change, the temperature of the transformer oil also changes, causing the oil volume to expand or contract. The transformer oil conservator is an important component of the power transformer. It can maintain the stability of the transformer's internal oil pressure by increasing or decreasing the amount of oil to compensate for these volume changes.

[0003] During operation, impurities will gradually accumulate in the transformer oil, causing the oil quality to deteriorate. The deterioration of the oil quality will affect the electrical performance of the transformer, leading to an increase in the failure rate, and will accelerate the aging of the insulating material, shortening the service life of the transformer. Due to the presence of impurities, the transformer oil needs to be replaced frequently, increasing the maintenance cost. Existing transformer oil conservators mainly include open oil conservators, corrugated oil conservators, and capsule oil conservators. The open oil conservator is simple in design and directly connected to the transformer body. It has no special impurity removal function and cannot effectively remove impurities in the transformer oil; the corrugated oil conservator isolates the transformer oil from the atmosphere through a corrugated membrane, has good sealing, and has no special impurity removal function, and cannot prevent impurities from entering the transformer body; the capsule oil conservator isolates the transformer oil from the atmosphere through a capsule, has good sealing, and also has no special impurity removal function, and cannot prevent impurities from entering the transformer body.

[0004] Based on the above reasons, the present invention proposes a transformer oil storage cabinet with impurity removal. Summary of the invention

[0005] In order to overcome the disadvantage that the existing transformer oil conservator has no special impurity removal function and cannot prevent impurities from entering the transformer body, the present invention provides an impurity removal type transformer oil conservator.

[0006] A de-mixing type transformer oil storage cabinet comprises a base, the base is fixedly connected to an oil reservoir, one side of the oil reservoir is connected to a return pipe, the return pipe is fixedly connected to the base, the base is fixedly connected to a liquid outlet pipe, the return pipe and the liquid outlet pipe are both connected to a transformer body, the liquid outlet pipe is connected to a filter pipe, the other side of the oil reservoir is connected to a liquid inlet pipe, the filter pipe is connected to the liquid inlet pipe, a first sliding frame is arranged in the filter pipe, a first filter screen is fixedly connected to the top of the first sliding frame, the first filter screen is located in the filter pipe, the first sliding frame is slidably connected to a sliding plug, at least two telescopic rods are fixedly connected between the sliding plug and the first sliding frame, and the return pipe is fixedly connected to a first one-way valve.

[0007] Furthermore, it also includes a fixed pipe, which is connected between the filter pipe and the liquid outlet pipe. The first sliding frame has two through holes, the through holes on one side face the fixed pipe, and the through holes on the other side face the liquid inlet pipe. A second sliding frame is slidably connected between the fixed pipe and the filter pipe to close the connection between the liquid outlet pipe and the fixed pipe. A second filter screen is fixedly connected to one side of the filter pipe close to the fixed pipe, and a third one-way valve is fixedly connected to one side of the second sliding frame close to the second filter screen to limit the transformer oil in the fixed pipe from entering the liquid inlet pipe in one direction through the through hole.

[0008] Furthermore, a spring is included, and the spring is fixed between the fixed tube and the second sliding frame.

[0009] Furthermore, a closing frame for closing the connection between the liquid outlet pipe and the filter tube is fixedly connected to the bottom of the first sliding frame, the filter tube is slidably connected to the first sliding frame, and a second one-way valve for one-way air intake when the first sliding frame rises is fixedly connected to one side of the filter tube close to the closing frame.

[0010] Furthermore, the second sliding frame is fixedly connected to a side of the first sliding frame close to the first filter screen.

[0011] Furthermore, it also includes a fan blade, which is rotatably connected to the first sliding frame, and the rotating shaft of the fan blade is slidably connected to the sliding plug. The end of the rotating shaft of the fan blade close to the first filter is fixedly connected with a first stirring plate for cleaning the first filter.

[0012] Furthermore, a storage tank is included, which is connected to the filter tube, and the connection between the filter tube and the storage tank is located above the liquid inlet pipe and the first filter screen. The storage tank is slidably connected to an opening and closing frame for blocking the connection between the filter tube and the storage tank.

[0013] Furthermore, the opening and closing frame is fixedly connected to the second sliding frame.

[0014] Furthermore, it also includes a second stirring blade for introducing the impurities intercepted by the first filter into the storage tank, and the second stirring blade is spline-connected to the rotating shaft of the fan blade.

[0015] Furthermore, the second stirring blade is in contact with the sliding plug.

[0016] The beneficial effect is that the present invention intercepts impurities mixed in the transformer oil in the cavity of the filter tube located above the sliding plug through the first filter screen, effectively intercepts and stores impurities in the transformer oil, achieves impurity removal effect, and prevents impurities from flowing back into the transformer body.

[0017] The present invention stores oil through the first oil passage under normal circumstances. In the special case that the first filter screen is blocked, the oil pressure forces the closing frame to block the connection between the liquid outlet pipe and the filter tube, so that the first oil passage is closed and the second oil passage is opened at the same time, so that the oil passage switching is quickly realized, avoiding the oil pressure from affecting the normal operation of the entire system and leaving enough time for the subsequent cleaning of the first filter screen and the cleaning of impurities intercepted by the first filter screen.

[0018] When storing oil through the first oil channel and switching to the second oil channel for storing oil, the present invention utilizes oil pressure to impact the fan blades to rotate, thereby causing the first stirring blade to rotate, thereby achieving the effect of automatically cleaning the first filter in real time and reducing the probability of clogging of the first filter.

[0019] When switching to the second oil channel for oil storage, the present invention utilizes oil pressure to drive the second stirring plate to rotate, thereby introducing the impurities intercepted by the first filter into the storage tank, thereby automatically removing and collecting the impurities intercepted by the first oil channel without affecting the oil storage, thereby facilitating the subsequent oil storage through the first oil channel. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0021] Figure 2 It is a three-dimensional structural cross-sectional view of the present invention.

[0022] Figure 3 It is a three-dimensional structural schematic diagram of the sliding frame, the first filter screen, the sliding plug and other components of the present invention.

[0023] Figure 4 It is a schematic diagram of the three-dimensional structure of the first sliding frame, the sliding plug and the telescopic rod of the present invention.

[0024] Figure 5 It is a three-dimensional structural schematic diagram of the first sliding frame, the spring, the second sliding frame and other components of the present invention.

[0025] Figure 6 It is a schematic diagram of the three-dimensional structure of the second sliding frame of the present invention.

[0026] Figure 7 It is a schematic diagram of the three-dimensional structure of the first stirring blade, the fan blade, the second stirring blade and other components of the present invention.

[0027] Figure 8 It is a schematic diagram of the three-dimensional structure of the fan blade, the first stirring blade and the second stirring blade of the present invention.

[0028] Fig. 9 It is a three-dimensional structural schematic diagram of the storage tank, opening and closing frame and other components of the present invention.

[0029] Fig.10It is a schematic diagram of the three-dimensional structure of the filter tube, the second sliding frame, the storage tank and the opening and closing frame of the present invention.

[0030] Names and serial numbers of parts in the figure: 101_base, 102_oil reservoir, 103_reflux pipe, 104_liquid outlet pipe, 1041_filter pipe, 105_liquid inlet pipe, 106_first sliding frame, 107_first filter screen, 108_sliding plug, 109_telescopic rod, 110_first one-way valve, 201_fixed pipe, 202_through hole, 203_spring, 204_second sliding frame, 205_second filter screen, 206_closing frame, 207_second one-way valve, 208_third one-way valve, 301_fan blade, 302_first stirring plate, 401_storage tank, 402_opening and closing frame, 403_second stirring plate. DETAILED DESCRIPTION

[0031] The preferred technical solutions of the present invention are described in detail below with reference to the accompanying drawings.

[0032] Embodiment 1: A transformer oil storage cabinet with impurities removed, such as Figure 1-Figure 4 As shown, the base 101 includes a base 101, an oil reservoir 102 is fixedly connected to the base 101, a return pipe 103 is connected to the left side of the oil reservoir 102, the return pipe 103 is fixedly connected to the base 101, a liquid outlet pipe 104 is fixedly connected to the right side of the base 101, the return pipe 103 and the liquid outlet pipe 104 are both connected to the transformer body, a filter pipe 1041 is connected to the rear end of the liquid outlet pipe 104, a liquid inlet pipe 105 is connected to the right side of the oil reservoir 102, the filter pipe 1041 is connected to the liquid inlet pipe 105, the liquid outlet pipe 104, the filter pipe 1041 and the liquid inlet pipe 105 constitute a first oil channel, a first sliding frame 106 is arranged in the filter pipe 1041, and the first sliding frame 106 is connected to the filter pipe 1041. A first filter screen 107 is fixedly connected to the top of the movable frame 106, and the first filter screen 107 is located in the filter tube 1041. The first sliding frame 106 is slidably connected to a sliding plug 108 in the up-down direction. When the sliding plug 108 slides upward, the oil in the transformer body can flow from the first sliding frame 106 to the first filter screen 107 in one direction, then flow into the liquid inlet pipe 105, and finally flow into the oil reservoir 102. Two telescopic rods 109 are fixedly connected between the sliding plug 108 and the upper part of the first sliding frame 106. The return pipe 103 is fixedly connected to a first one-way valve 110, and the first one-way valve 110 limits the one-way backflow of the oil in the oil reservoir 102 into the transformer body.

[0033] The front ends of the return pipe 103 and the liquid outlet pipe 104 are both connected to the main body of the transformer. During the operation of the transformer, as the load and ambient temperature change, the temperature of the transformer oil also changes, causing the oil volume to expand or contract. When the temperature rises, the oil volume in the transformer expands. At this time, the second one-way valve 207 is closed, and the excess oil in the transformer main body is discharged into the oil reservoir 102 through the liquid outlet pipe 104, the filter tube 1041 and the liquid inlet pipe 105 in sequence to prevent the oil pressure from being too high. When the temperature drops, the oil volume in the transformer shrinks. At this time, the second one-way valve 207 is opened, and the return pipe 103 introduces the oil in the oil reservoir 102 into the transformer main body to replenish the oil. In this way, the volume change of the transformer oil caused by temperature change can be compensated through the oil reservoir 102.

[0034] When the transformer oil flows through the filter tube 1041, when the oil flows through the first sliding frame 106, the sliding plug 108 will move upward relative to the first sliding frame 106 under the action of oil pressure, and the telescopic rod 109 will be compressed. At this time, a gap is generated between the movable plug and the first sliding frame 106, and the transformer oil can flow through the gap to the first filter screen 107. The impurities mixed in the transformer oil are intercepted by the first filter screen 107 in the cavity of the filter tube 1041 above the sliding plug 108, thereby effectively intercepting and storing the impurities in the transformer oil, achieving the impurity removal effect, and preventing the impurities from flowing back into the transformer body.

[0035] like Figure 5 and Figure 6As shown, it also includes a fixed pipe 201, which is connected between the filter pipe 1041 and the liquid outlet pipe 104, and the first sliding frame 106 has two through holes 202, the through hole 202 on one side faces the fixed pipe 201, and the through hole 202 on the other side faces the liquid inlet pipe 105, the liquid outlet pipe 104, the fixed pipe 201, the through hole 202 and the liquid inlet pipe 105 constitute a second oil channel, and a second sliding frame 204 is slidably connected between the fixed pipe 201 and the filter pipe 1041 along the up and down directions, and the right bottom of the second sliding frame 204 is used to close the connection between the liquid outlet pipe 104 and the fixed pipe 201, a spring 203 is fixedly connected between the fixed pipe 201 and the upper part of the second sliding frame 204, the left bottom of the second sliding frame 204 is fixedly connected to the top of the first sliding frame 106, and a second through hole 203 is fixedly connected to the side of the filter pipe 1041 close to the fixed pipe 201 The filter screen 205 and the filter tube 1041 are slidably connected to the first sliding frame 106. A closing frame 206 is fixedly connected to the bottom of the first sliding frame 106. The closing frame 206 is used to close the connection between the liquid outlet pipe 104 and the filter tube 1041. A second one-way valve 207 is fixedly connected to one side of the filter tube 1041 close to the closing frame 206. When the first sliding frame 106 drives the closing frame 206 to slide upward, the second one-way valve 207 is used to limit the external air from entering the filter tube 1041 in one direction. A third one-way valve 208 is fixedly connected to one side of the second sliding frame 204 close to the second filter screen 205. The third one-way valve 208 limits the transformer oil in the fixed pipe 201 from entering the liquid inlet pipe 105 in one direction through the through hole 202. A cleaning mechanism for cleaning the first filter screen 107 and cleaning impurities intercepted by the first filter screen 107 is provided in the first sliding frame 106.

[0036] When the first filter screen 107 is blocked, the pressure in the liquid outlet pipe 104 and the filter tube 1041 increases rapidly, forcing the first sliding frame 106 and the second sliding frame 204 to rise. When the first sliding frame 106 rises, outside air enters through the second one-way valve 207, and the spring 203 is compressed when the second sliding frame 204 rises. In this way, the first filter screen 107, the sliding plug 108, the telescopic rod 109 and the closing frame 206 move upward as a whole. The first sliding frame 106 drives the closing frame 206 to move upward to block the connection between the liquid outlet pipe 104 and the filter tube 1041, so that the first oil channel is closed, and the through hole 202 rises with the first sliding frame 106 to the height flush with the second filter screen 205. At the same time, the right bottom of the second sliding frame 204 rises to the interface where the fixed pipe 201 and the filter tube 1041 are connected, so that the second oil channel is opened, and the transformer oil flows into the oil reservoir 102 through the second oil channel.

[0037] In summary, under normal circumstances, the present invention stores oil through the first oil channel. In the special case that the first filter 107 is blocked, the oil pressure forces the closing frame 206 to block the connection between the liquid outlet pipe 104 and the filter tube 1041, so that the first oil channel is closed and the second oil channel is opened at the same time, so as to quickly realize the oil channel switching, avoid the oil pressure from affecting the normal operation of the entire system, and leave enough time for the subsequent cleaning of the first filter 107 and the cleaning of impurities intercepted by the first filter 107.

[0038] Embodiment 2: Based on embodiment 1, Figure 5 and Figure 7 As shown, the cleaning mechanism includes a fan blade 301, which is rotatably connected to the first sliding frame 106. When the transformer oil surges upward, the fan blade 301 is impacted and rotated. The rotating shaft of the fan blade 301 is slidably connected to the sliding plug 108. The top of the rotating shaft of the fan blade 301 is fixedly connected to the first stirring blade 302. When the first stirring blade 302 rotates, it cleans the first filter 107 to prevent the first filter 107 from being blocked.

[0039] When the transformer oil passes through the first oil passage and pushes up the sliding plug 108 , the transformer oil impacts the fan blade 301 to rotate, thereby driving the first stirring blade 302 to rotate, and the first stirring blade 302 cleans the first filter 107 .

[0040] While the transformer oil passes through the second oil channel and pushes up the first sliding frame 106 and the second sliding frame 204 , the transformer oil flows into the first sliding frame 106 from the through hole 202 and impacts the fan blade 301 to rotate, thereby driving the first stirring blade 302 to rotate, and the first stirring blade 302 cleans the first filter 107 .

[0041] In summary, the present invention utilizes oil pressure to impact the fan blade 301 to rotate when storing oil through the first oil channel and switching to the second oil channel to store oil, thereby causing the first stirring blade 302 to rotate, thereby achieving the effect of automatically cleaning the first filter 107 in real time and reducing the probability of clogging of the first filter 107.

[0042] like Figure 5 , Figure 7 , Figure 8 , Fig. 9 and Fig.10As shown, the cleaning mechanism also includes a storage tank 401, which is connected to the filter tube 1041, and the connection between the filter tube 1041 and the storage tank 401 is located above the liquid inlet pipe 105 and the first filter screen 107. The storage tank 401 is slidably connected to an opening and closing frame 402 along the up and down directions, and the top of the opening and closing frame 402 is fixedly connected to the second sliding frame 204. The opening and closing frame 402 is used to block the connection between the filter tube 1041 and the storage tank 401. The rotating shaft of the fan blade 301 is splined with a second stirring blade 403 along the up and down directions. The second stirring blade 403 contacts the top of the sliding plug 108, and the second stirring blade 403 is used to introduce impurities intercepted by the first filter screen 107 into the storage tank 401.

[0043] When the fan blade 301 rotates, it will also drive the second stirring blade 403 to rotate synchronously. During the period when the transformer oil passes through the first oil channel and pushes up the sliding plug 108, the opening and closing frame 402 blocks the storage tank 401 to prevent the transformer oil from flowing into the storage tank 401. When the transformer oil passes through the second oil channel, the second sliding frame 204 drives the opening and closing frame 402 to move upward until it no longer blocks the storage tank 401. At this time, the second stirring blade 403 moves to the connection between the filter tube 1041 and the storage tank 401. When the second stirring blade 403 rotates, it guides the accumulated impurities into the storage tank 401.

[0044] In summary, when switching to the second oil channel for oil storage, the present invention utilizes oil pressure to drive the second stirring plate 403 to rotate, thereby introducing the impurities intercepted by the first filter 107 into the storage tank 401, thereby automatically removing and collecting the impurities intercepted by the first oil channel without affecting the oil storage, so as to facilitate the subsequent oil storage through the first oil channel.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any equivalent substitutions made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A transformer oil storage cabinet with impurities removed, comprising a base (101), the base (101) being fixedly connected to an oil reservoir (102), one side of the oil reservoir (102) being connected to a return pipe (103), the return pipe (103) being fixedly connected to the base (101), the base (101) being fixedly connected to a liquid outlet pipe (104), the return pipe (103) and the liquid outlet pipe (104) both being connected to a transformer body, characterized in that: The liquid outlet pipe (104) is connected to a filter pipe (1041), and the other side of the oil reservoir (102) is connected to a liquid inlet pipe (105). The filter pipe (1041) is connected to the liquid inlet pipe (105). A first sliding frame (106) is arranged inside the filter pipe (1041). A first filter screen (107) is fixedly connected to the top of the first sliding frame (106). The first filter screen (107) is located inside the filter pipe (1041). The first sliding frame (106) is slidably connected to a sliding plug (108). At least two telescopic rods (109) are fixedly connected between the sliding plug (108) and the first sliding frame (106). The return pipe (103) is fixedly connected to a first one-way valve (110).

2. The impurity-removing transformer oil conservator according to claim 1, characterized in that: The invention also comprises a fixed tube (201), wherein the fixed tube (201) is connected between the filter tube (1041) and the liquid outlet tube (104), the first sliding frame (106) has two through holes (202), the through holes (202) on one side face the fixed tube (201), and the through holes (202) on the other side face the liquid inlet tube (105), and the fixed tube (201) and the filter tube (1041) are slidably connected to each other to close the liquid outlet tube (104). A second sliding frame (204) is provided at the connection point between the liquid pipe (104) and the fixed pipe (201); a second filter screen (205) is fixedly connected to one side of the filter pipe (1041) close to the fixed pipe (201); and a third one-way valve (208) is fixedly connected to one side of the second sliding frame (204) close to the second filter screen (205) for limiting the transformer oil in the fixed pipe (201) from entering the liquid inlet pipe (105) in one direction through the through hole (202).

3. The impurity-removing transformer oil conservator according to claim 2, characterized in that: It also includes a spring (203), wherein the spring (203) is fixed between the fixed tube (201) and the second sliding frame (204).

4. The impurity-removing transformer oil conservator according to claim 3, characterized in that: A closing frame (206) for closing the connection between the liquid outlet pipe (104) and the filter tube (1041) is fixedly connected to the bottom of the first sliding frame (106); the filter tube (1041) is slidably connected to the first sliding frame (106); and a second one-way valve (207) for allowing one-way air to enter when the first sliding frame (106) rises is fixedly connected to a side of the filter tube (1041) close to the closing frame (206).

5. The impurity-removing transformer oil conservator according to claim 4, characterized in that: The second sliding frame (204) is fixedly connected to a side of the first sliding frame (106) close to the first filter screen (107).

6. The impurity-removing transformer oil conservator according to claim 5, characterized in that: It also includes a fan blade (301), the fan blade (301) is rotatably connected to the first sliding frame (106), the rotating shaft of the fan blade (301) is slidably connected to the sliding plug (108), and the end of the rotating shaft of the fan blade (301) close to the first filter screen (107) is fixedly connected to a first stirring blade (302) for cleaning the first filter screen (107).

7. The impurity-removing transformer oil conservator according to claim 6, characterized in that: The storage tank (401) is also included. The storage tank (401) is connected to the filter tube (1041), and the connection point between the filter tube (1041) and the storage tank (401) is located above the liquid inlet tube (105) and the first filter screen (107). The storage tank (401) is slidably connected to an opening and closing frame (402) for blocking the connection point between the filter tube (1041) and the storage tank (401).

8. The impurity-removing transformer oil conservator according to claim 7, characterized in that: The opening and closing frame (402) is fixedly connected to the second sliding frame (204).

9. The impurity-removing transformer oil conservator according to claim 8, characterized in that: It also includes a second stirring blade (403) for introducing impurities intercepted by the first filter screen (107) into the storage tank (401), and the second stirring blade (403) is spline-connected to the rotating shaft of the fan blade (301).

10. The impurity-removing transformer oil conservator according to claim 9, characterized in that: The second stirring blade (403) is in contact with the sliding plug (108).

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